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The average age of M boys is ‘b’ years and of ‘n’ girls ‘c’ years. The average age of all together is_________?
A. (mb – nc)/ (m + n) years
B. (mb + nc)/ (m – n) years
C. (mb + nc)/ (m + n) yearsCorrect Answer
D. (mb – nc)/ (m – n) years
Correct Option: C. (mb + nc)/ (m + n) years
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